– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 pm Sun 12 Apr Local TimeUpdates in: hr min sUpdate imminent
Issued: 4 pm Sun 12 Apr Local Time
Updates in:
Update imminent hr min s
Issued: 4 pm Sun 12 Apr Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryHeavy rain (total 27mm), mostly on Tue afternoon. Becoming colder with a light covering of snow ,mostly falling on Tue night. Freeze-thaw conditions (max 10°C on Sun afternoon, min -1°C on Tue night). Wind will be generally light. | Days 5–7 Weather SummaryLight rain (total 6mm), mostly falling on Wed afternoon. Freeze-thaw conditions (max 6°C on Sat morning, min -2°C on Wed night). Wind will be generally light. | ||||||||||||||||
Sun 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | | |  | |  |  |  |  |  |  | | | | | | |
light rain | rain shwrs | light rain | light rain | light rain | light rain | heavy rain | light snow | light snow | risk tstorm | some clouds | rain shwrs | rain shwrs | some clouds | rain shwrs | rain shwrs | rain shwrs | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | 5 | 2 | — | — | — | — | — | — | — | — | |
0.8 | 3 | 1.1 | 0.9 | 1.6 | 4 | 11 | 3 | — | 3 | — | 0.4 | 1.5 | — | 0.3 | 0.7 | 0.3 | |
max °C | 10 | 9 | 6 | 6 | 5 | 3 | 3 | 4 | 1 | 2 | 0 | 2 | 4 | 2 | 4 | 5 | 4 |
min °C | 10 | 6 | 6 | 6 | 3 | 3 | 3 | -1 | 0 | 2 | -2 | 1 | 3 | -1 | 2 | 5 | 2 |
10 | 4 | 5 | 4 | 0 | -1 | -1 | -3 | -2 | 0 | -2 | 1 | 2 | -1 | 2 | 5 | 2 | |
1950 | 1750 | 1350 | 1350 | 1100 | 950 | 1100 | 400 | 650 | 800 | 0 | 800 | 1000 | 300 | 950 | 1150 | 900 | |
Cloud base (m) | 750 | 550 | 600 | 600 | 550 | 550 | 550 | 750 | 550 | 650 | 650 | 600 | 650 | 650 | 600 | 750 | 700 |
 | — | — | 6:20 | — | — | 6:18 | — | — | 6:16 | — | — | 6:15 | — | — | 6:13 | — | — |
 | 7:53 | — | — | 7:55 | — | — | 7:57 | — | — | 7:59 | — | — | — | 8:00 | — | — | 8:01 |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Heavy rain (total 27mm), mostly on Tue afternoon. Becoming colder with a light covering of snow ,mostly falling on Tue night. Freeze-thaw conditions (max 10°C on Sun afternoon, min -1°C on Tue night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Light rain (total 6mm), mostly falling on Wed afternoon. Freeze-thaw conditions (max 6°C on Sat morning, min -2°C on Wed night). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. To see the weather forecasts for the other elevations, use the tab navigation above the table. For a wider overview of the weather, consult the Weather Map of Washington.